Keyboard



FIG. 1 is a front perspective view of a keyboard showing our new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a front elevation view thereof.

FIG. 5 is a rear elevation view thereof.

FIG. 6 is a left side elevation view thereof; and,

FIG. 7 is a right side elevation view thereof.

The elements illustrated in broken lines in the drawing figures are considered environmental only and do not form a part of the claimed design. 

The ornamental design for a keyboard, as shown and described. 